OpenHardwareMonitor: Hardware/HDD/SMART.cs@d3a54e407737

     1 /*

     3   Version: MPL 1.1/GPL 2.0/LGPL 2.1

     5   The contents of this file are subject to the Mozilla Public License Version

     6   1.1 (the "License"); you may not use this file except in compliance with

     7   the License. You may obtain a copy of the License at

     9   http://www.mozilla.org/MPL/

    11   Software distributed under the License is distributed on an "AS IS" basis,

    12   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License

    13   for the specific language governing rights and limitations under the License.

    15   The Original Code is the Open Hardware Monitor code.

    17   The Initial Developer of the Original Code is

    18   Michael Möller <m.moeller@gmx.ch>.

    19   Portions created by the Initial Developer are Copyright (C) 2009-2010

    20   the Initial Developer. All Rights Reserved.

    22   Contributor(s):

    24   Alternatively, the contents of this file may be used under the terms of

    25   either the GNU General Public License Version 2 or later (the "GPL"), or

    26   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

    27   in which case the provisions of the GPL or the LGPL are applicable instead

    28   of those above. If you wish to allow use of your version of this file only

    29   under the terms of either the GPL or the LGPL, and not to allow others to

    30   use your version of this file under the terms of the MPL, indicate your

    31   decision by deleting the provisions above and replace them with the notice

    32   and other provisions required by the GPL or the LGPL. If you do not delete

    33   the provisions above, a recipient may use your version of this file under

    34   the terms of any one of the MPL, the GPL or the LGPL.

    36 */

    38 using System;

    39 using System.Collections.Generic;

    40 using System.Runtime.InteropServices;

    42 namespace OpenHardwareMonitor.Hardware.HDD {

    44   internal class SMART {

    46     [Flags]

    47     public enum Status : ushort {

    48       PreFailureWarranty = 0x01,

    49       OnLineCollection = 0x02,

    50       Performance = 0x04,

    51       ErrorRate = 0x08,

    52       EventCount = 0x10,

    53       SelfPreserving = 0x20

    54     }

    56     public enum AttributeID : byte {

    57       ReadErrorRate = 0x01,

    58       ThroughputPerformance = 0x02,

    59       SpinUpTime = 0x03,

    60       StartStopCount = 0x04,

    61       ReallocatedSectorsCount = 0x05,

    62       ReadChannelMargin = 0x06,

    63       SeekErrorRate = 0x07,

    64       SeekTimePerformance = 0x08,

    65       PowerOnHours = 0x09,

    66       SpinRetryCount = 0x0A,

    67       RecalibrationRetries = 0x0B,

    68       PowerCycleCount = 0x0C,

    69       SoftReadErrorRate = 0x0D,

    70       AirflowTemperature = 0xBE,

    71       Temperature = 0xC2,

    72       HardwareECCRecovered = 0xC3,

    73       ReallocationEventCount = 0xC4,

    74       CurrentPendingSectorCount = 0xC5,

    75       UncorrectableSectorCount = 0xC6,

    76       UltraDMACRCErrorCount = 0xC7,

    77       WriteErrorRate = 0xC8,

    78       DriveTemperature = 0xE7

    79     }

    81     [StructLayout(LayoutKind.Sequential, Pack = 1)]

    82     public struct DriveAttribute {

    83       public AttributeID ID;

    84       public Status StatusFlags;

    85       public byte AttrValue;

    86       public byte WorstValue;

    87       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]

    88       public byte[] RawValue;

    89       public byte Reserved;

    90     };

    92     [Flags]

    93     private enum AccessMode : uint {

    94       Read = 0x80000000,

    95       Write = 0x40000000,

    96       Execute = 0x20000000,

    97       All = 0x10000000

    98     }

   100     [Flags]

   101     private enum ShareMode : uint {

   102       None = 0,

   103       Read = 1,

   104       Write = 2,

   105       Delete = 4

   106     }

   108     private enum CreationMode : uint {

   109       New = 1,

   110       CreateAlways = 2,

   111       OpenExisting = 3,

   112       OpenAlways = 4,

   113       TruncateExisting = 5

   114     }

   116     [Flags]

   117     private enum FileAttribute : uint {

   118       Readonly = 0x00000001,

   119       Hidden = 0x00000002,

   120       System = 0x00000004,

   121       Directory = 0x00000010,

   122       Archive = 0x00000020,

   123       Device = 0x00000040,

   124       Normal = 0x00000080,

   125       Temporary = 0x00000100,

   126       SparseFile = 0x00000200,

   127       ReparsePoint = 0x00000400,

   128       Compressed = 0x00000800,

   129       Offline = 0x00001000,

   130       NotContentIndexed = 0x00002000,

   131       Encrypted = 0x00004000,

   132     }

   134     private enum DriveCommand : uint {

   135       GetVersion = 0x00074080,

   136       SendDriveCommand = 0x0007c084,

   137       ReceiveDriveData = 0x0007c088

   138     }

   140     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   141     private struct CommandBlockRegisters {

   142       public byte Features;

   143       public byte SectorCount;

   144       public byte LBALow;

   145       public byte LBAMid;

   146       public byte LBAHigh;

   147       public byte Device;

   148       public byte Command;

   149       public byte Reserved;

   150     }

   152     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   153     private struct DriveCommandParameter {

   154       private uint BufferSize;

   155       public CommandBlockRegisters Registers;

   156       public byte DriveNumber;

   157       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]

   158       public byte[] Reserved;

   159     }

   161     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   162     private struct DriverStatus {

   163       public byte DriverError;

   164       public byte IDEError;

   165       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]

   166       public byte[] Reserved;

   167     }

   169     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   170     private struct DriveCommandResult {

   171       public uint BufferSize;

   172       public DriverStatus DriverStatus;

   173     }

   175     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   176     private struct DriveSmartReadResult {

   177       public uint BufferSize;

   178       public DriverStatus DriverStatus;

   179       public byte Version;

   180       public byte Reserved;

   181       [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DRIVE_ATTRIBUTES)]

   182       public DriveAttribute[] Attributes;

   183     }

   185     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   186     private struct Identify {

   187       public ushort GeneralConfiguration;

   188       public ushort NumberOfCylinders;

   189       public ushort Reserved;

   190       public ushort NumberOfHeads;

   191       public ushort UnformattedBytesPerTrack;

   192       public ushort UnformattedBytesPerSector;

   193       public ushort SectorsPerTrack;

   194       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]

   195       public ushort[] VendorUnique;

   196       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]

   197       public byte[] SerialNumber;

   198       public ushort BufferType;

   199       public ushort BufferSectorSize;

   200       public ushort NumberOfEccBytes;

   201       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]

   202       public byte[] FirmwareRevision;

   203       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 40)]

   204       public byte[] ModelNumber;

   205       public ushort MoreVendorUnique;

   206       public ushort DoubleWordIo;

   207       public ushort Capabilities;

   208       public ushort MoreReserved;

   209       public ushort PioCycleTimingMode;

   210       public ushort DmaCycleTimingMode;

   211       [MarshalAs(UnmanagedType.ByValArray, SizeConst = 406)]

   212       public byte[] More;

   213     }

   215     [StructLayout(LayoutKind.Sequential, Pack = 1)]

   216     private struct DriveIdentifyResult {

   217       public uint BufferSize;

   218       public DriverStatus DriverStatus;

   219       public Identify Identify;

   220     }

   222     public static readonly IntPtr INVALID_HANDLE_VALUE = (IntPtr)(-1);

   224     private const byte SMART_CMD = 0xB0;

   225     private const byte ID_CMD = 0xEC;

   227     private const byte SMART_READ_DATA = 0xD0;

   228     private const byte SMART_ENABLE_OPERATIONS = 0xD8;

   230     private const byte SMART_LBA_MID = 0x4F;

   231     private const byte SMART_LBA_HI = 0xC2;

   233     private const int MAX_DRIVE_ATTRIBUTES = 512;

   235     private SMART() { }

   237     public static IntPtr OpenPhysicalDrive(int driveNumber) {

   238       return NativeMethods.CreateFile(@"\\.\PhysicalDrive" + driveNumber,

   239         AccessMode.Read | AccessMode.Write, ShareMode.Read | ShareMode.Write,

   240         IntPtr.Zero, CreationMode.OpenExisting, FileAttribute.Device,

   241         IntPtr.Zero);

   242     }

   244     public static bool EnableSmart(IntPtr handle, int driveNumber) {

   245       DriveCommandParameter parameter = new DriveCommandParameter();

   246       DriveCommandResult result;

   247       uint bytesReturned;

   249       parameter.DriveNumber = (byte)driveNumber;

   250       parameter.Registers.Features = SMART_ENABLE_OPERATIONS;

   251       parameter.Registers.LBAMid = SMART_LBA_MID;

   252       parameter.Registers.LBAHigh = SMART_LBA_HI;

   253       parameter.Registers.Command = SMART_CMD;

   255       return NativeMethods.DeviceIoControl(handle, DriveCommand.SendDriveCommand,

   256         ref parameter, Marshal.SizeOf(typeof(DriveCommandParameter)), out result,

   257         Marshal.SizeOf(typeof(DriveCommandResult)), out bytesReturned,

   258         IntPtr.Zero);

   259     }

   261     public static DriveAttribute[] ReadSmart(IntPtr handle, int driveNumber) {

   262       DriveCommandParameter parameter = new DriveCommandParameter();

   263       DriveSmartReadResult result;

   264       uint bytesReturned;

   266       parameter.DriveNumber = (byte)driveNumber;

   267       parameter.Registers.Features = SMART_READ_DATA;

   268       parameter.Registers.LBAMid = SMART_LBA_MID;

   269       parameter.Registers.LBAHigh = SMART_LBA_HI;

   270       parameter.Registers.Command = SMART_CMD;

   272       bool valid = NativeMethods.DeviceIoControl(handle,

   273         DriveCommand.ReceiveDriveData, ref parameter, Marshal.SizeOf(parameter),

   274         out result, Marshal.SizeOf(typeof(DriveSmartReadResult)),

   275         out bytesReturned, IntPtr.Zero);

   277       if (!valid)

   278         return null;

   279       else

   280         return result.Attributes;

   281     }

   283     public static string ReadName(IntPtr handle, int driveNumber) {

   284       DriveCommandParameter parameter = new DriveCommandParameter();

   285       DriveIdentifyResult result;

   286       uint bytesReturned;

   288       parameter.DriveNumber = (byte)driveNumber;

   289       parameter.Registers.Command = ID_CMD;

   291       bool valid = NativeMethods.DeviceIoControl(handle,

   292         DriveCommand.ReceiveDriveData, ref parameter, Marshal.SizeOf(parameter),

   293         out result, Marshal.SizeOf(typeof(DriveIdentifyResult)),

   294         out bytesReturned, IntPtr.Zero);

   296       if (!valid)

   297         return null;

   298       else {

   300         byte[] bytes = result.Identify.ModelNumber;

   301         char[] chars = new char[bytes.Length];

   302         for (int i = 0; i < bytes.Length; i += 2) {

   303           chars[i] = (char)bytes[i + 1];

   304           chars[i + 1] = (char)bytes[i];

   305         }

   307         return new string(chars).Trim();

   308       }

   309     }

   311     public static int CloseHandle(IntPtr handle) {

   312       return NativeMethods.CloseHandle(handle);

   313     }

   315     private static class NativeMethods {

   316       private const string KERNEL = "kernel32.dll";

   318       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi,

   319         CharSet = CharSet.Unicode)]

   320       public static extern IntPtr CreateFile(string fileName,

   321         AccessMode desiredAccess, ShareMode shareMode, IntPtr securityAttributes,

   322         CreationMode creationDisposition, FileAttribute flagsAndAttributes,

   323         IntPtr templateFilehandle);

   325       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi)]

   326       public static extern int CloseHandle(IntPtr handle);

   328       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi)]

   329       [return: MarshalAsAttribute(UnmanagedType.Bool)]

   330       public static extern bool DeviceIoControl(IntPtr handle,

   331         DriveCommand command, ref DriveCommandParameter parameter,

   332         int parameterSize, out DriveSmartReadResult result, int resultSize,

   333         out uint bytesReturned, IntPtr overlapped);

   335       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi)]

   336       [return: MarshalAsAttribute(UnmanagedType.Bool)]

   337       public static extern bool DeviceIoControl(IntPtr handle,

   338         DriveCommand command, ref DriveCommandParameter parameter,

   339         int parameterSize, out DriveCommandResult result, int resultSize,

   340         out uint bytesReturned, IntPtr overlapped);

   342       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi)]

   343       [return: MarshalAsAttribute(UnmanagedType.Bool)]

   344       public static extern bool DeviceIoControl(IntPtr handle,

   345         DriveCommand command, ref DriveCommandParameter parameter,

   346         int parameterSize, out DriveIdentifyResult result, int resultSize,

   347         out uint bytesReturned, IntPtr overlapped);

   348     }

   349   }

   350 }

author	moel.mich
	Sat, 18 Sep 2010 19:56:39 +0000
changeset 190	d3a54e407737
parent 167	b7cc9d09aefe
child 195	0ee888c485d5
permissions	-rw-r--r--